Hi Oliver, On 18/01/11 2:21 , Oliver Neumann wrote: > I am trying to detect which of a set of 3D points (e.g. vertices of a scene > model) are > currently visible. I tried to derive from osg::Geometry and overwrite the > drawImplementation methode. The _vertexData.array contains all points > specified (all > points, also the occluded) and _vertexData.indices is NULL. I cannot find any > information about which points are visible. Where is this information saved > to?
You can't find it because this information isn't stored anywhere, or even computed (outside of OpenGL) for that matter. Visibility determination is done on the Drawable/Geometry level based on the bounding sphere of that object. What do you need this information for? Cheers, /ulrich _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
